package com.bz.xtcx.manager.config;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.ArrayList;
import java.util.List;

@Configuration
public class FastJsonConfiguration implements WebMvcConfigurer {
    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        // 1、需要先定义一个converter 转换器
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        // 2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(
                SerializerFeature.WriteNullStringAsEmpty,
                SerializerFeature.WriteMapNullValue,
                SerializerFeature.PrettyFormat);
        // 3、在convert 中添加配置信息
        fastConverter.setFastJsonConfig(fastJsonConfig);
        List<MediaType> mtLs = new ArrayList<MediaType>();
        mtLs.add(MediaType.TEXT_HTML);
        mtLs.add(MediaType.APPLICATION_JSON_UTF8);
        fastConverter.setSupportedMediaTypes(mtLs);
        // 4、将convert 添加到converters当中
        converters.add(fastConverter);
    }
}
